Anyone who has ever done a re-seal job on an older camera
can vouch for what a Big Sloppy Mess it is.
Generally, replacing them isn't a big deal - it's the cleanup
that is a real pain.
The one replacement that _is_ miserable are the back door seals.
These are typically long and thin. Getting the self-adhesive
foam in there with the foam side down it a frustrating and
repetitive procedure.
There used to be someone who sold compression foam for this exact
purpose - i.e., It had no adhesive at all but relied on compression
to do the job. I can no longer find a source for this material.
So, last night I tried do this with felt and it worked very nicely.
Once the door had been close on it for a while, the felt compressed
into the back door channels, and I just had to blow out some minor
wisps of material with compressed air.
I'm told that black yarn was used in the original Nikon Fs and this
is also a viable option.
These seals aren't really to prevent light leaks, they're there to
minimize dust in the film chamber, so we'll see how this works.
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